/Engine/Source/Editor/AnimGraph/Public/IAnimNodeEditMode.h
Called when the user changed widget mode by pressing "Space" key
[UE::Widget::EWidgetMode](API\Editor\EditorFramework\UE__Widget__EWidgetMode) ChangeToNextWidgetMode ( [UE::Widget::EWidgetMode](API\Editor\EditorFramework\UE__Widget__EWidgetMode) CurWidgetMode )